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Tunnel and subway shallow buried underground excavation method Brief introduction: The shallow buried and concealed excavation method is based on the basic principle of the New Austrian Tunneling Method. During the construction, multiple auxiliary construction measures are used to strengthen the surrounding rock, fully mobilize the self-supporting capacity of the surrounding rock, support and seal the surrounding rock in time after excavation, so that it can work together with the surrounding rock to form a joint support system, effectively restraining -
Shallow buried underground excavation method design and construction Brief Discussion on the Design and Construction of Shallow Buried and Concealed Excavation Method -
Construction organization design of shallow buried tunnel The proposed project site is located in the middle of the industrial park, and the original landform is low hills. The current site is the motorway (auxiliary road), sidewalk and green belt of Road A and Road B. The terrain is relatively flat. -
Construction method of long pipe roof for large-span shallow buried tunnel The main feature of this method is to reinforce the long pipe shed construction area through surface grouting, and reinforce the tunnel excavation into the construction area through the placement of long pipe shed. This method is mainly used to summarize the construction method of Φ 108 long pipe shed. Surface grouting is simply introduced because it is not representative. Data content: 1. Preface 2. Construction method characteristics 3 -
Special construction scheme for shallow buried tunnel The starting point of Lot II of Huandao Road (Aoshan Road Gaodian No. 2 Road Section) Project is under Haidi Road, and the ending point is connected to the left and right auxiliary roads of Xinglin Bridge in the direction of Chang'an Road. The stake number range is ZK1+738 ～ ZK2+870, YK1+740～YK2+892.270， The total length of the line is 1.152km. The tunnel works of this project are the control works of the whole project, -
Construction Scheme of Thermal Shallow Buried Tunnel Scope of bidding: all civil engineering and thermal mechanical construction within the scope shown in the construction drawings, including the leveling of the construction site, soil excavation, concrete structure, pipeline and equipment installation, heating station foundation, equipment installation in the heating station, pipeline and equipment pressure test, earthwork backfilling, completion survey, acceptance, and restoration of the ground capacity and landform. -
Shallow buried and concealed excavation method for tunnel construction Shallow buried underground excavation method is a method for underground excavation of various types of underground caverns in the ground near the surface. On the basis of the successful test of academician Wang Mengshu in the loess section of Jundushan Tunnel in 1984, it was applied in the pioneering, risky and complex Beijing Fuxingmen subway turn back line project in 1986, which was obtained under the conditions of less demolition, no disturbance to residents and no damage to the environment -
Study on Construction Technology of Super shallow Buried Tunnel Study on Construction Technology of Super shallow Buried Tunnel -
Safety construction scheme of shallow buried underground excavation method for a tunnel The section of this line starts at and ends at. The length of the concealed excavation section is m. According to the design requirements, the shallow buried concealed excavation method is adopted, and the composite lining structure is adopted. The section is a rectangular section. The inner clear height of the section lining is 4.5m, and the inner clear width of the left and right sides is 8m, as shown in Figure 2.2. The secondary formwork grouting lining adopts formwork grouting reinforced concrete, and the waterproof layer is set between the initial support and the secondary lining -
Construction method of concealed excavation middle tunnel with three arches and two columns Introduction 1. Preface With the development of urban subway and rapid transit in China, more and more metropolises are building subways. Practice has proved that rail transit (subway) has the advantages of high efficiency, energy conservation, environmental protection, large traffic volume, fast speed, good safety, less urban road area occupation, good air defense, etc. Traffic pressure eased, buildings flourished and land increased wherever rail transit went -
Jacking construction method of shallow buried large section box culvert With the development of social economy, there are more and more highway, railway, municipal and other construction projects in China. Due to the increase of road density, the construction of high-speed railway and other reasons, the jacking method can be used for road to road intersection, road to pipeline intersection, and railway to highway intersection when conditions are met. Especially in the reconstruction of railway speed increase, because the railway operation is almost impossible -
Construction Method of High Pressure Jet Grouting Pile for Strengthening Surrounding Rock of Shallow Tunnel Content introduction 1 Preface The tunnel body passes through the section of shallow buried soft surrounding rock. The shallow buried section is generally located in the valley. The groundwater is greatly affected by surface precipitation, and the stability of surrounding rock will decline when encountering water. There are many measures that can be taken, such as tunnel body pipe shed method, open construction of concealed tunnels, surface reinforcement treatment, strengthening tunnel support, etc. The shallow buried section of XX tunnel of XX bid section of Yongwu Expressway in Fujian Province adopts high voltage -
Construction Technology of Shallow Buried Tunnel with Subsurface Excavation_ppt The contents of shallow buried tunnel construction technique_ppt are detailed and can be used for reference -
Comprehensive construction technology of shallow buried pipe jacking caisson Focus on not getting lost ▄ Municipal engineering, pipe network ‖ shallow buried underground excavation, pipe jacking, open caisson comprehensive construction technology is suitable for making courseware, lectures, training, expert lectures -
Construction Technology of Urban Shallow Buried Cavern by Concealed Excavation Method Abstract: This paper introduces the application of ultra shallow buried excavation method in the construction of urban underground street crossing through the engineering example of Dongdandong pedestrian crossing in Chang'an Street, Beijing. Key words: construction of pedestrian tunnel with shallow burial and underground excavation ▲ With the development of the city, environmental and traffic problems are becoming increasingly prominent, and the construction of underground passages in the streets of busy urban areas is increasing. Generally, open excavation is adopted -
Construction method of anchor rod and soil nail wall Data Catalog I, Preface II, Features III, Scope of Application IV, Construction Process V, Key Points of Construction Operation Browse Detailed Catalog>>Content Introduction With the development of high-rise buildings and municipal construction, foundation pit support technology has become a hot issue in the field of foundation. As an underground structure, foundation pit support structure -
Construction method for exit of shallow buried tunnel under unsymmetrical pressure of soft surrounding rock The portal of the right tunnel at the entrance of the tunnel is slightly buried and is located on a vertical cliff. There is a Class II highway about 20m above the portal, and a V-shaped gully about 40m below the portal. There is perennial water in the gully, and there is a Class II highway stone arch bridge below the V-shaped gully. The Project Department, in combination with the actual situation of the site construction, adopts the ground reinforcement treatment, side and front slope protection, and increases the temporary carriageway tunnel from the left tunnel -
Construction method of open cut and concealed excavation in shallow buried soft rock section of a tunnel Content introduction Because the open cut tunnel passes through the valley, the buried layer is shallow, the surrounding rock quality is poor, the construction period is short, and the construction is difficult, the construction method of open cut and concealed excavation is used. 1. Surface reinforcement treatment of open cut tunnel: the buried layer of the tunnel top is shallow and the rock quality is poor. We treated the tunnel surface before the concealed excavation. Along the direction of the tunnel body, both sides are widened by 5m, and reinforced by shotcrete with anchor mesh, so that the whole arch roof rock layer is -
Special construction scheme for safety of shallow buried tunnel excavation method The section of this line starts at and ends at. The length of the concealed excavation section is m. According to the design requirements, the shallow buried concealed excavation method is adopted, and the composite lining structure is adopted. The section is a rectangular section. The inner clear height of the section lining is 4.5m, and the inner clear width of the left and right sides is 8m, as shown in Figure 2.2. The secondary formwork grouting lining adopts formwork grouting reinforced concrete, and the waterproof layer is set between the initial support and the secondary lining -
Block Diagram of Construction Procedure of Shallow Buried and Concealed Excavation Method This data is a block diagram of the construction procedure of shallow buried excavation method, which is valuable and detailed for reference. -
Analysis on the technical application of shallow buried underground excavation method in tunnel construction When the displacement time curve has a reverse bend point, that is, the displacement data has an abnormal rapid growth, it indicates that the surrounding rock and support have been in an unstable state. Monitoring should be strengthened, and support should be properly strengthened. If necessary, excavation should be stopped immediately and reinforcement measures should be taken in time for construction treatment. -
New modification of construction scheme for thermal shallow buried tunnel Scope of bidding: all civil engineering and thermal mechanical construction within the scope shown in the construction drawings, including the leveling of the construction site, soil excavation, concrete structure, pipeline and equipment installation, heating station foundation, equipment installation in the heating station, pipeline and equipment pressure test, earthwork backfilling, completion survey, acceptance, and restoration of the ground capacity and landform. -
Construction scheme of shallow buried and concealed excavation for a power tunnel project The power tunnel in this section is 16m north of the planned midline and 7m north of the construction midline. The concealed excavation construction section at the intersection of Baimiao Village is changed from the original 1 # shaft to a 6m × 6.9m composite lining concealed excavation shaft. The east and west sides of the shaft are 2m × 2.3m composite lining single hole tunnels with 59m length, and the south side of the shaft is 2m × 2.3m composite lining single hole tunnels with 20m length -
Detailed handout document for shallow buried and concealed excavation construction of Municipal Practice Mind Map This document is the detailed handout document of "Municipal Practice - Mind Map" for shallow buried and concealed excavation construction. The content of the document includes: professional formulas, calculation tables, mind map and other forms. The document meets the standards, is reliable, rich in content, detailed in ideas, and can be used for reference. -
Construction technology of shock absorption and controlled blasting for shallow buried tunnel in city Combined with specific engineering examples, the microseismic controlled blasting technology for urban shallow buried and underground excavated subway tunnels is analyzed and studied, and a set of blasting technology suitable for urban shallow buried large section tunnels, small spacing tunnels, broken surrounding rock tunnels, and tunnels adjacent to buildings, as well as the control methods for tunnel overbreak and underbreak are summarized. -
Special construction scheme for safety of shallow buried tunnel excavation method The section of this line starts at and ends at. The length of the concealed excavation section is m. According to the design requirements, the shallow buried concealed excavation method is adopted, and the composite lining structure is adopted. The section is a rectangular section. The inner clear height of the section lining is 4.5m, and the inner clear width of the left and right sides is 8m, as shown in Figure 2.2. The secondary formwork grouting lining adopts formwork grouting reinforced concrete, and the waterproof layer is set between the initial support and the secondary lining -
Construction technology of horizontal freezing method for shallow buried tunnel Since the construction of horizontal freezing section is 81.86m, and on the transition curve, according to the technical conditions of horizontal hole drilling, the tunnel is frozen in two sections. The freezing length of the first section is 55m, the freezing length of the second section is 37m, and the overlapping length between the two frozen soil curtains is 10m -
Reverse construction method of one-time arch buckle excavation for subway station This data is the reverse construction method of one-time arch buckle excavation for subway station. The content is detailed and can be used for reference. -
Special construction scheme for safety of shallow buried tunnel excavation method The section of this line starts at and ends at. The length of the concealed excavation section is m. According to the design requirements, the shallow buried concealed excavation method is adopted, and the composite lining structure is adopted. The section is a rectangular section. The inner clear height of the section lining is 4.5m, and the inner clear width of the left and right sides is 8m, as shown in Figure 2.2. The secondary formwork grouting lining adopts formwork grouting reinforced concrete, and the waterproof layer is set between the initial support and the secondary lining -
Construction method of super large section tunnel excavation under urban super shallow buried condition The excavation section of the main tunnel of the station is 366 square meters, and the minimum burial depth is 7.5 meters. In view of the complex geological conditions such as weak tunnel surrounding rock, poor self stability, dense and old surface structures above the tunnel, a number of construction technologies and measures have been adopted in the construction, forming a set of comprehensive excavation construction technology. After summary, the excavation construction of super large section tunnel under urban ultra shallow burial conditions has been formed -
Brief Analysis of Bridge Installation Construction Method The cable tray is a supporting part for supporting cables. It is simple to install and convenient to repair and transform. It is widely used in weak current engineering. The bridge is composed of straight section (1-4m long), tee, cross, elbow, support, down lead device and connecting piece. The cable tray is generally divided into trapezoidal, trough and tray types. All trays in this project are trough type. -
Construction method of small concrete hollow block As a new type of wall material, concrete small hollow block has been listed as ten new technologies by the Ministry of Construction and popularized throughout the country. The block itself has the characteristics of light weight (hollow ratio of 25%~50%), high strength and bearing capacity. The production of the block is convenient for land saving, energy saving and waste recycling. The block house is also convenient for improving labor productivity, increasing the effective use area of the house, and has good thermal insulation effect -
Cylinder climbing formwork construction method The cylinder climbing formwork is not only used in the construction of nuclear power plant containment structure, but also applicable to high-rise buildings, piers, dams, chimneys, large silos, etc -
Construction method of reinforced concrete structure In recent years, structural repair and reinforcement technology has been widely used in reinforced concrete beam, slab, column and shear wall structures in bridges, tunnels and industrial and civil buildings -
Construction method of light well point dewatering In the construction of the communication dispatching building of Daqing Electric Power Bureau, this method shortens the construction period of the excavation foundation, saves the foundation pit support cost, and also ensures the safety of the original office building 8m away from the foundation pit during the construction process. Good results have been achieved. -
Construction method of rock soil anti floating anchor rod Construction method of rock soil anti floating anchor rod -
Hole by hole construction method of movable formwork The hole by hole construction method of mobile formwork is applicable to the construction of highway simply supported box girder and continuous box girder with a span of less than 48m, multi hole connection and a beam weight of less than 1590T. The structural stress of piers and abutments shall be calculated before using this construction method to ensure the safety of piers and abutments after this type of bridge building frame is set -
Construction method of cast-in-place concrete inclined column This data is the construction method of cast-in-place concrete inclined column, 24 pages in total, with detailed contents for reference.
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one Underground excavation method for subway construction -
two Construction technology of shallow buried and concealed excavation -
three Code for construction of underground tunnels -
four Construction process of underground tunnel -
five Construction method of shallow buried and concealed excavation -
six The concealed excavation method follows the construction principle -
seven Construction principle of shallow buried and concealed excavation method -
eight Safe construction scheme for shallow buried and concealed excavation